protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (1 GPs behind) idle=96e/1/0x4000000000000004 softirq=113072/113073 fqs=0 (t=10500 jiffies g=170997 q=107) rcu: rcu_preempt kthread starved for 10500 jiffies! g170997 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 28952 10 2 0x80004000 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x74b/0xb80 kernel/sched/core.c:4069 schedule+0x131/0x1e0 kernel/sched/core.c:4136 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895 rcu_gp_fqs_loop kernel/rcu/tree.c:1639 [inline] rcu_gp_kthread+0xed8/0x1770 kernel/rcu/tree.c:1799 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 NMI backtrace for cpu 0 CPU: 0 PID: 22163 Comm: syz-executor.3 Not tainted 5.4.0-rc1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x15a/0x220 kernel/rcu/tree_stall.h:254 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline] check_cpu_stall kernel/rcu/tree_stall.h:529 [inline] rcu_pending kernel/rcu/tree.c:2795 [inline] rcu_sched_clock_irq+0xe22/0x1ae0 kernel/rcu/tree.c:2244 update_process_times+0x12d/0x180 kernel/time/timer.c:1726 tick_sched_handle kernel/time/tick-sched.c:167 [inline] tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1299 __run_hrtimer kernel/time/hrtimer.c:1514 [inline] __hrtimer_run_queues+0x403/0x840 kernel/time/hrtimer.c:1576 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1638 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:unwind_next_frame+0xa6/0x7a0 arch/x86/kernel/unwind_frame.c:269 Code: 00 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 04 fd 77 00 41 f6 06 03 0f 85 75 05 00 00 <48> 89 5d b8 4d 8d 75 38 4c 89 f0 48 c1 e8 03 48 bb 00 00 00 00 00 RSP: 0018:ffff8880aea09738 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff11015d41307 RBX: 0000000000000000 RCX: ffff888043c16440 RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff8880aea097e0 RBP: ffff8880aea097d0 R08: ffffffff816251d5 R09: ffff8880aea097e0 R10: ffffed1015d41308 R11: 0000000000000000 R12: ffff888043c16440 R13: ffff8880aea097e0 R14: dffffc0000000000 R15: ffff8880aea09838 arch_stack_walk+0xb4/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xb6/0x150 kernel/stacktrace.c:123 save_stack mm/kasan/common.c:69 [inline] set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc+0x11c/0x1b0 mm/kasan/common.c:510 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:518 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slab.c:3262 [inline] kmem_cache_alloc_node_trace+0x225/0x2d0 mm/slab.c:3592 __do_kmalloc_node mm/slab.c:3614 [inline] __kmalloc_node_track_caller+0x3c/0x60 mm/slab.c:3629 __kmalloc_reserve net/core/skbuff.c:141 [inline] __alloc_skb+0xe8/0x500 net/core/skbuff.c:209 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb drivers/block/aoe/aoecmd.c:67 [inline] aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1d6/0x7f0 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x57/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x95/0x170 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers+0x7b6/0x990 kernel/time/timer.c:1773 run_timer_softirq+0x4a/0x90 kernel/time/timer.c:1786 __do_softirq+0x333/0x7c4 arch/x86/include/asm/paravirt.h:766 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x227/0x230 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x113/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:__find_get_block_slow fs/buffer.c:217 [inline] RIP: 0010:__find_get_block+0x4b7/0x10b0 fs/buffer.c:1296 Code: e8 de a0 e8 ff 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 7f cf e8 ff 49 89 dc 48 8b 1b <48> 89 de 48 83 e6 20 31 ff e8 fb 9a af ff 48 83 e3 20 75 15 e8 c0 RSP: 0018:ffff88802d7cf858 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff11012c61c15 RBX: 000000000000c02b RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88809630e0a8 RBP: ffff88802d7cf8b8 R08: dffffc0000000000 R09: ffffed1012c61c16 R10: ffffed1012c61c16 R11: 0000000000000000 R12: ffff88809630e0a8 R13: 0000000000000001 R14: ffff88809630e0a8 R15: 1ffff1101452f07b sb_find_get_block include/linux/buffer_head.h:338 [inline] recently_deleted fs/ext4/ialloc.c:682 [inline] find_inode_bit+0x283/0x510 fs/ext4/ialloc.c:722 __ext4_new_inode+0x11ab/0x5650 fs/ext4/ialloc.c:914 ext4_create+0x232/0x5a0 fs/ext4/namei.c:2587 lookup_open fs/namei.c:3224 [inline] do_last fs/namei.c:3314 [inline] path_openat+0x2236/0x4420 fs/namei.c:3525 do_filp_open+0x192/0x3d0 fs/namei.c:3555 do_sys_open+0x29f/0x560 fs/open.c:1097 __do_sys_openat fs/open.c:1124 [inline] __se_sys_openat fs/open.c:1118 [inline] __x64_sys_openat+0xa2/0xb0 fs/open.c:1118 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459a29 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1d98c42c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459a29 RDX: 00000000000026e1 RSI: 0000000020000200 RDI: ffffffffffffff9c RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1d98c436d4 R13: 00000000004c6288 R14: 00000000004db1e8 R15: 00000000ffffffff net_ratelimit: 14 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1